Tip:1) You can charge any size or shape of batteries together as long
as they are the same type. Do not mix up alkaline, Ni-Mh and Ni-Cd.
All Ni-Mh, all Ni-Cd or all alkaline only.2) It does look nice with the clear cover on top while charging
batteries, but it is better just to leave it open to help on
dissipating heat. Heat shorten the life of batteries.3) Make sure to set the battery type switch to the right type
before inserting batteries.

Pros:- individual bay charging. You can charge even one or three
batteries; it doesn't have to be in pairs- Charges AA, AAA, C, D, 9v and even regular alkaline- microprocessor controlled with short-circuit and over-current
protection- 2 USB charging slots. one rated 1A and the other rated at 2A.- Fast

Specifications:

Work with different battery chemistries – regenerates or recharges
alkaline, NiMH or NiCd, Lithium batteries as well as Mobiles.